Compound useful as substitute for rubber.



.pliable.

', NITF'ED STATES PATEN GEFIQE.

ISIDOR KITSEE, or PHILADELPHIA, PENNSYLVANIA;

COMPOUND USEFUL AS SUBSTITUTE FOR RUB BEFi;

SPECIFICATION forming part of Letters Patent No. 651,364, dated June 12, 1900.

Application filed Tune 26, 1899. Serial N0. 721,946. (No specimens.)

2"0 (M6 w/wm/ it may concern:

Be it known that I, ISIDOR KITSEE, of the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Compounds Useful as Substitutes for Rubber, of which the following is a specification.

My invention relates to an improvement in compounds useful as substitutes for rubber.

The object of my invention is to produce a compound useful for most of thepurposes for which hard or low vulcanized rubber is used. It is well known that celluloid as such withstands the action of Water and to a certain extent of different acids; but the product is too brittle to be used to any extent for articles which have to be bent or otherwise made In the production of articles again where pliability is not so much sought for as rigidity and toughness celluloid cannot well be employed alone on account of its great liability to crack or split. In my endeavor to produce a compound the rigidity or flexibility of which may vary according to requirements I have found that the intermixing of the dissolvedor plastic celluloid with different compositions of glue results in a product splendidly adapted as substitutes for either hard or low vulcanized rubber. Printers rollers consist mostly of glue, molasses, and glycerin. In some instances dissolved india-rubber and turpentine are added. This com position, if intermixed in equal proportions with the dissolved celluloid, gives a plastic compound which does not crack and can be bent and to some extent even stretched without losing its adherence; but it is not necessary to use the proportions as used in the printers roller just as it is not necessary to use all the ingredients therein. I have intermixed the celluloid with only glue and molasses combined, a small proportion of glycerin added, with a slight proportion of acetic acid, and found that theresultant mass answers well for certain purposes.

In practicing my invention if the compound as usually employed in printers rollers is used the same is first heated in a water-bath, and after the mass has entirely dissolved the celluloid is added with constant stirring and then the whole left to cool; but I have found that if a preponderance of the roller compound is employed the resulting mass will not withstand theaction of acid and for that matter even water for a great length of time. It is therefore necessary to add to the compound before its intermixture with the celluloid a certain proportion of oil, or, as I have found to answer far better, a certain proportion of tar if the article to be made out of the compound should have a black color. To ten pounds of the compound about one-half pound of the tar should be added. If indiarubber is present in the roller compound in a somewhat larger proportion than usual, a flour of sulfur maybe added. With this ad dition a slight vulcanizin g process takes place which greatly facilitates the making of the substitute for rubber. It is understood that for different purposes different proportions of celluloid should be addedto the glue compound. For some purposes-as, forinstance, for the manufacture of jars and like articles-it is best to reduce the proportion of molasses and to increase the proportions of celluloid, andwhere a large proportion of india-rubber is present it is best to heat the mixture with constant stirring and adding the flour of sulfur during the heating process. This compound can be used by itself and can be cast into the required shape or form; or it may be applied to printers rollers, for which it makes a far better covering than the one now in use; or it may be applied to textile fabric; ora compound may be made of it, including fibrous material-such, for instance, as paper-pulp, raw cotton, hemp or flax, or the like.

I do not claim here the application of this compound to textile fabrics or their combination with fibrous material, as these willform the subject-matter of other applications.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. As a substitute for rubber a compound consisting of a compound substantially as employed in printers rollers intermixed with celluloid.

2 The herein-described composition conmo sisting'ofa glue compound, and celluloid sub- In testimony whereof I sign my name, in stantially as and for the purpose specified. the presence of two subscribing witnesses, this 3. A compound, having as one of its com- 23d day of June, A. D. 1899. ponent parts a glue compound, and as the ISIDOR KITSEE. 5 second component part dissolved celluloid, \Vitnesses:

and an agent for rendering the glue oom- E. R. STILLEY,

pound insoluble in Water. WALLACE B. ELDRIDGE. 

